Sunan Ibn Majah Book 1, Hadith 134
The Prophet said: "There is no prayer for one who does not have ablution, and there is no ablution for one who does not mention the Name of Allah (before it). There is no prayer for one who does not send blessing, (Salat) upon the Prophet, and there is no prayer for one who does not love the Ansar." (Da'if)
Another chain with similar wording.
"The Messenger of Allah said: 'There is no prayer for one who does not have ablution, and there is no ablution for one who does not mention the Name of Allah (before it).'"
The Messenger of Allah liked to start on the right when purifying himself, when combing his hair and when putting on his footwear.